lowRISC/opentitan
Oct 2024 – Oct 2025
13 Months active
Languages Used
C++BUILDBzlCPythonRustShellStarlark
Technical Skills
C++ DevelopmentUnit TestingBackend DevelopmentBazelBuild SystemBuild System Configuration
Amaury Pouly
PROFILE
Amaury Pouly
Amaury Pouly contributed to the lowRISC/opentitan repository by architecting and delivering robust hardware-software integration features, focusing on device-tree-driven configuration, modular build systems, and test infrastructure modernization. He refactored core components to decouple logic from hardware backends, expanded emulation and multitop support, and improved reliability through dynamic memory mapping and API redesign. Using C, Python, and Bazel, Amaury enhanced maintainability by removing hardcoded constants, centralizing configuration, and introducing per-console state management for UART and SPI. His work enabled scalable hardware validation, streamlined CI workflows, and fostered cross-target reusability, demonstrating deep expertise in embedded systems and build automation.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
419Total
Bugs
54
Commits
419
Features
130
Lines of code
24,275
Activity Months13
Your Network
108 people
Work History
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 performance window: Achieved targeted improvements in documentation and API design that enhance reliability, cross-target reuse, and onboarding for new hardware configurations. No critical bugs fixed this month; emphasis was on quality, clarity, and maintainability that reduce future integration risk and accelerate feature delivery.
2 Commits • 2 Features
Oct 1, 2025October 2025 performance window: Achieved targeted improvements in documentation and API design that enhance reliability, cross-target reuse, and onboarding for new hardware configurations. No critical bugs fixed this month; emphasis was on quality, clarity, and maintainability that reduce future integration risk and accelerate feature delivery.
October 2025
September 2025
18 Commits • 6 Features
Sep 1, 2025September 2025 monthly summary for lowRISC/opentitan: Delivered a set of high-impact features and reliability improvements across hardware tops management, memory mapping, PWM flexibility, ROM scrambling, and CI workflows. The work enabled faster hardware bring-up, safer parameter handling, and more robust testing through end-to-end changes that touch the build system, top generation, debug/test tooling, and the verification pipeline.
September 2025
18 Commits • 6 Features
Sep 1, 2025September 2025 monthly summary for lowRISC/opentitan: Delivered a set of high-impact features and reliability improvements across hardware tops management, memory mapping, PWM flexibility, ROM scrambling, and CI workflows. The work enabled faster hardware bring-up, safer parameter handling, and more robust testing through end-to-end changes that touch the build system, top generation, debug/test tooling, and the verification pipeline.
August 2025
40 Commits • 12 Features
Aug 1, 2025August 2025 (2025-08) focused on decoupling core logic from hardware backends, expanding emulation coverage, and modernizing the SOC toolchain to improve build reliability, testability, and maintenance. Key outcomes include a modular backend architecture, UART/SPI refactors, broader emulation targets, and significant memory and API modernization that reduce risk and support faster iteration.
40 Commits • 12 Features
Aug 1, 2025August 2025 (2025-08) focused on decoupling core logic from hardware backends, expanding emulation coverage, and modernizing the SOC toolchain to improve build reliability, testability, and maintenance. Key outcomes include a modular backend architecture, UART/SPI refactors, broader emulation targets, and significant memory and API modernization that reduce risk and support faster iteration.
August 2025
July 2025
17 Commits • 3 Features
Jul 1, 2025July 2025 monthly summary for lowRISC/opentitan focusing on business value and technical achievements. Delivered major DT and clocking enhancements, reinforced documentation and top-level descriptions, and improved build reliability. Temporarily disabled SPX verification in ROM_EXT emulation to stabilize workflows with a plan to re-enable.
July 2025
17 Commits • 3 Features
Jul 1, 2025July 2025 monthly summary for lowRISC/opentitan focusing on business value and technical achievements. Delivered major DT and clocking enhancements, reinforced documentation and top-level descriptions, and improved build reliability. Temporarily disabled SPX verification in ROM_EXT emulation to stabilize workflows with a plan to re-enable.
June 2025
19 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for lowRISC/opentitan. delivered two major features with strong business value and long-term maintainability benefits. Key features delivered: - OTTFF Console Per-Console UART Flow Control: Adds per-console flow-control state management in OTTF console to improve robustness when multiple consoles are active. This change is backed by commits 976ed4a97023fe82246c3e0bbf32c4b7ebecb2dc and a494661e64d8bf09492057b844f0bd428001b1c3. - OpenTitan hardware top-level rules modernization and OTP integration: Overhauls the top-level attribute API, removes top_desc dependencies, introduces attrs-based attributes for tops/IPs, integrates OTP overlays, and centralizes top-level definitions to improve maintainability and consistency across hardware rules and OTP configurations. Representative commits include fc34a691f1190a80c57b9eba8b44220f9b790b5a, 641d7e74f140a967057cf7e4ecaff4ee67985624, f5a67dd2205a914fc14fc5bf52b0a08aeb506201, ec21f39bbfa15a26db479c822254ffe6db22b812, 91d64f0bf7d0618c35fde107d8f77ce78f66b74c, bd4ef097f33e09b191a4c9963525e44ff876835d, d69f9a299a9309345574ee15243f093d97042ae4, be03113fee50211cd1d9a8b289e5a69069c41387, 7cd84ef6bb633a0f3b6f42a3e18c11f0006fee99, 6533f01af7f6c6c77db559169cadbab72413e46a, bf3bcb8d0970053a1288f1aaa1e889da8fc5e4b9, 133f88a6d54d51eb9e33d3c0bf04e48cbeac4733, 3ec7dc7e8a4d41ee1e711c491041923438bcc246, 043c2c263e8b838ff7ce9eaa05b0ee7e71ecf793, dde29d3e2f6d8562ed5a4fc1d060d481138e43e8, fc31781acbb8438a47b0f80a599401dfa95fff14, a6a62e412285c9d12fc97a94fe5dd5b747e13228. Major bugs fixed: - No explicit major bug fixes were recorded for this month in the provided data. Focus was on feature delivery and architectural improvements that reduce future risk and improve maintainability. Overall impact and accomplishments: - Business value: Direct improvements to system reliability in multi-console scenarios and a more maintainable, scalable hardware rule framework reduce ongoing maintenance costs and speed up onboarding for new contributors. - Technical achievements: Demonstrated skills in API redesign, build and autogen tooling, and OTP overlay integration. The scope included refactoring top-level descriptions, unifying attribute access, and rewriting autogen paths to align with the new API. - Future readiness: The updated architecture lays a foundation for easier OTP configuration, clearer hardware/top IP interfaces, and more robust autogen/testing pipelines.
19 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for lowRISC/opentitan. delivered two major features with strong business value and long-term maintainability benefits. Key features delivered: - OTTFF Console Per-Console UART Flow Control: Adds per-console flow-control state management in OTTF console to improve robustness when multiple consoles are active. This change is backed by commits 976ed4a97023fe82246c3e0bbf32c4b7ebecb2dc and a494661e64d8bf09492057b844f0bd428001b1c3. - OpenTitan hardware top-level rules modernization and OTP integration: Overhauls the top-level attribute API, removes top_desc dependencies, introduces attrs-based attributes for tops/IPs, integrates OTP overlays, and centralizes top-level definitions to improve maintainability and consistency across hardware rules and OTP configurations. Representative commits include fc34a691f1190a80c57b9eba8b44220f9b790b5a, 641d7e74f140a967057cf7e4ecaff4ee67985624, f5a67dd2205a914fc14fc5bf52b0a08aeb506201, ec21f39bbfa15a26db479c822254ffe6db22b812, 91d64f0bf7d0618c35fde107d8f77ce78f66b74c, bd4ef097f33e09b191a4c9963525e44ff876835d, d69f9a299a9309345574ee15243f093d97042ae4, be03113fee50211cd1d9a8b289e5a69069c41387, 7cd84ef6bb633a0f3b6f42a3e18c11f0006fee99, 6533f01af7f6c6c77db559169cadbab72413e46a, bf3bcb8d0970053a1288f1aaa1e889da8fc5e4b9, 133f88a6d54d51eb9e33d3c0bf04e48cbeac4733, 3ec7dc7e8a4d41ee1e711c491041923438bcc246, 043c2c263e8b838ff7ce9eaa05b0ee7e71ecf793, dde29d3e2f6d8562ed5a4fc1d060d481138e43e8, fc31781acbb8438a47b0f80a599401dfa95fff14, a6a62e412285c9d12fc97a94fe5dd5b747e13228. Major bugs fixed: - No explicit major bug fixes were recorded for this month in the provided data. Focus was on feature delivery and architectural improvements that reduce future risk and improve maintainability. Overall impact and accomplishments: - Business value: Direct improvements to system reliability in multi-console scenarios and a more maintainable, scalable hardware rule framework reduce ongoing maintenance costs and speed up onboarding for new contributors. - Technical achievements: Demonstrated skills in API redesign, build and autogen tooling, and OTP overlay integration. The scope included refactoring top-level descriptions, unifying attribute access, and rewriting autogen paths to align with the new API. - Future readiness: The updated architecture lays a foundation for easier OTP configuration, clearer hardware/top IP interfaces, and more robust autogen/testing pipelines.
June 2025
May 2025
27 Commits • 12 Features
May 1, 2025May 2025 monthly summary for lowRISC/opentitan focusing on delivering business value through robust hardware description improvements, refactoring, and test hygiene. Highlights include hardcoded-constant removals across multiple modules, DTTool extension support, hardware-description enhancements, OTTF console refactor and modularization, and OTTF/test configuration updates. Key features delivered: - DTTool: Added support for multiple extensions to improve handling of device-tree extensions. - HW Description: Declare ipconfig in PWM and GPIO hardware descriptors; Expose PWM parameter to dtgen to improve configurability and DT accuracy. - OTTF Console: Introduced a dedicated OTTF console state structure and migrated device-specific logic from generic print code to device-specific files. - OTTF Console: Centralized state management (sink/getc, SPI frame number, TX GPIO indicator) and generalized buffering per console to enable multi-console support. - OTTF: Refactor of console code and test configuration coordination, including variable renames for clarity. Major bugs fixed: - Remove hardcoded constants across modules (batch 1 across SRAM, RSTMGR, PWRMGR, SYSRST, DIFs, top description handling, multitop, darjeeling, otp mmap references, otp image, and gpio), enabling maintainability and reducing test fragility. Representative commits include 94021a2718bf..., 8cc60f08c9fa..., 51efadd60262..., c0dca03070cb..., 609ee2c441f7..., 38f889565996..., bf59472e0677..., 21f188a2a62b9..., 3cf6ab39250af9d..., b6a263491f6a8a0a..., 95c85d6234121f0a, f0d0a923d0beffc4, a97ddad4afe0e4ee, 833cf72ffee645a985b3347b4c6e7da6761cf1a1, 32a13764e0a0e303cc4200b5808faf49b5b18218. Overall impact and accomplishments: - Increased configurability, modularity, and maintainability across the opentitan stack, setting the groundwork for scalable multi-console support and easier future extensions. - Improved hardware description fidelity and device-tree generation accuracy, reducing drift between code and hardware models and enabling more deterministic builds. - Strengthened testing posture by removing hardcoded constants and queuing a robust set of tests aligned with new architecture. Technologies/skills demonstrated: - C/C++ refactoring and modularization, device-tree and dtgen integration, and multi-console state management. - Bazel/top-level build hygiene and top-level description management adjustments. - Test hygiene improvements and commit-level traceability across multiple modules.
May 2025
27 Commits • 12 Features
May 1, 2025May 2025 monthly summary for lowRISC/opentitan focusing on delivering business value through robust hardware description improvements, refactoring, and test hygiene. Highlights include hardcoded-constant removals across multiple modules, DTTool extension support, hardware-description enhancements, OTTF console refactor and modularization, and OTTF/test configuration updates. Key features delivered: - DTTool: Added support for multiple extensions to improve handling of device-tree extensions. - HW Description: Declare ipconfig in PWM and GPIO hardware descriptors; Expose PWM parameter to dtgen to improve configurability and DT accuracy. - OTTF Console: Introduced a dedicated OTTF console state structure and migrated device-specific logic from generic print code to device-specific files. - OTTF Console: Centralized state management (sink/getc, SPI frame number, TX GPIO indicator) and generalized buffering per console to enable multi-console support. - OTTF: Refactor of console code and test configuration coordination, including variable renames for clarity. Major bugs fixed: - Remove hardcoded constants across modules (batch 1 across SRAM, RSTMGR, PWRMGR, SYSRST, DIFs, top description handling, multitop, darjeeling, otp mmap references, otp image, and gpio), enabling maintainability and reducing test fragility. Representative commits include 94021a2718bf..., 8cc60f08c9fa..., 51efadd60262..., c0dca03070cb..., 609ee2c441f7..., 38f889565996..., bf59472e0677..., 21f188a2a62b9..., 3cf6ab39250af9d..., b6a263491f6a8a0a..., 95c85d6234121f0a, f0d0a923d0beffc4, a97ddad4afe0e4ee, 833cf72ffee645a985b3347b4c6e7da6761cf1a1, 32a13764e0a0e303cc4200b5808faf49b5b18218. Overall impact and accomplishments: - Increased configurability, modularity, and maintainability across the opentitan stack, setting the groundwork for scalable multi-console support and easier future extensions. - Improved hardware description fidelity and device-tree generation accuracy, reducing drift between code and hardware models and enabling more deterministic builds. - Strengthened testing posture by removing hardcoded constants and queuing a robust set of tests aligned with new architecture. Technologies/skills demonstrated: - C/C++ refactoring and modularization, device-tree and dtgen integration, and multi-console state management. - Bazel/top-level build hygiene and top-level description management adjustments. - Test hygiene improvements and commit-level traceability across multiple modules.
April 2025
36 Commits • 11 Features
Apr 1, 2025April 2025 performance summary for lowRISC/OpenTitan focusing on deliverables that drive reliability, maintainability, and faster hardware bring-up. The month combined documentation excellence, DT-based test porting, and targeted stability improvements to reduce onboarding time and accelerate release readiness.
36 Commits • 11 Features
Apr 1, 2025April 2025 performance summary for lowRISC/OpenTitan focusing on deliverables that drive reliability, maintainability, and faster hardware bring-up. The month combined documentation excellence, DT-based test porting, and targeted stability improvements to reduce onboarding time and accelerate release readiness.
April 2025
March 2025
80 Commits • 22 Features
Mar 1, 2025March 2025 monthly summary for lowRISC/opentitan: Delivered major DT/multitop test portability, robust Darjeeling CI/test environment, RAM/storage fixes, and boot/manifest address updates. These efforts improve CI reliability, cross-topology test coverage, and maintainability while accelerating validation across hardware configurations.
March 2025
80 Commits • 22 Features
Mar 1, 2025March 2025 monthly summary for lowRISC/opentitan: Delivered major DT/multitop test portability, robust Darjeeling CI/test environment, RAM/storage fixes, and boot/manifest address updates. These efforts improve CI reliability, cross-topology test coverage, and maintainability while accelerating validation across hardware configurations.
February 2025
65 Commits • 28 Features
Feb 1, 2025February 2025 (2025-02) — OpenTitan development across the opentitan repo: delivered cross-target feature work, critical bug fixes, and CI/test enhancements with a focus on stability, cross-compatibility, and device-tree/IP configuration capabilities. Key work spans exec_env propagation and binary dependency compatibility checks, dependency reduction in silicon_creator, DT/IPConfig integration and DT generator improvements, and CI/QA investments that improve ship readiness.
65 Commits • 28 Features
Feb 1, 2025February 2025 (2025-02) — OpenTitan development across the opentitan repo: delivered cross-target feature work, critical bug fixes, and CI/test enhancements with a focus on stability, cross-compatibility, and device-tree/IP configuration capabilities. Key work spans exec_env propagation and binary dependency compatibility checks, dependency reduction in silicon_creator, DT/IPConfig integration and DT generator improvements, and CI/QA investments that improve ship readiness.
February 2025
January 2025
43 Commits • 16 Features
Jan 1, 2025January 2025 performance summary for lowRISC/opentitan: Delivered major platform modernization and multi-top readiness, strengthened test environments, and reinforced build/CI stability. Achievements include topgen and linker script modernization for per-top builds and multitop compatibility; device-tree (DT) header generation across all IPs with API/tooling modernization; expanded multitop testing coverage with EB/DJ compatibility and darjeeling environments; build system and CI improvements including top-aware opentitan_binary and enhanced default build info; and substantial maintenance work to reduce tech debt and improve API quality.
January 2025
43 Commits • 16 Features
Jan 1, 2025January 2025 performance summary for lowRISC/opentitan: Delivered major platform modernization and multi-top readiness, strengthened test environments, and reinforced build/CI stability. Achievements include topgen and linker script modernization for per-top builds and multitop compatibility; device-tree (DT) header generation across all IPs with API/tooling modernization; expanded multitop testing coverage with EB/DJ compatibility and darjeeling environments; build system and CI improvements including top-aware opentitan_binary and enhanced default build info; and substantial maintenance work to reduce tech debt and improve API quality.
December 2024
18 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for lowRISC/opentitan focused on strengthening the build system for multi-top hardware, stabilizing interrupt handling, and improving CI readability. Work delivered enables scalable multi-top configurations, reduces cross-top integration risk, and enhances developer productivity through better tooling and automation.
18 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for lowRISC/opentitan focused on strengthening the build system for multi-top hardware, stabilizing interrupt handling, and improving CI readability. Work delivered enables scalable multi-top configurations, reduces cross-top integration risk, and enhances developer productivity through better tooling and automation.
December 2024
November 2024
53 Commits • 13 Features
Nov 1, 2024November 2024 (2024-11) monthly summary for lowRISC/opentitan focused on DT-driven configuration, autogen tooling, and build-system modernization to enable scalable multi-top deployments, safer cryptographic handling, and maintainable silicon-software integration. Deliveries emphasized top-level and top-generation device-tree capabilities, a revamped autogen pipeline for DIFs, and broad devicetables migrations across critical subsystems. The work also advanced Device Tree porting across subsystems with Earl Grey adjustments, and improved OT certificate parsing/generation for robust certificate handling. These efforts collectively improve maintainability, CI reliability, and speed of multi-top development cycles while delivering business value through reusable configurations and safer cryptographic tooling.
November 2024
53 Commits • 13 Features
Nov 1, 2024November 2024 (2024-11) monthly summary for lowRISC/opentitan focused on DT-driven configuration, autogen tooling, and build-system modernization to enable scalable multi-top deployments, safer cryptographic handling, and maintainable silicon-software integration. Deliveries emphasized top-level and top-generation device-tree capabilities, a revamped autogen pipeline for DIFs, and broad devicetables migrations across critical subsystems. The work also advanced Device Tree porting across subsystems with Earl Grey adjustments, and improved OT certificate parsing/generation for robust certificate handling. These efforts collectively improve maintainability, CI reliability, and speed of multi-top development cycles while delivering business value through reusable configurations and safer cryptographic tooling.
October 2024
1 Commits
Oct 1, 20242024-10 monthly summary for lowRISC/opentitan: Focused on stabilizing test infrastructure for mailbox-related tests. Key accomplishment: fixed a compile-time dependency in the Mailbox (mbx) unit tests by adding the missing <array> header to enable std::array usage in tests, resolving prior compile/run failures and restoring CI reliability. Commit involved: b59a3827910f8cfde528f04c6982a0effa1af20d. Overall impact: improved regression coverage and test stability with minimal risk to codebase. Demonstrated skills in C++ test harness maintenance, header management, and collaboration via focused, low-risk fixes.
1 Commits
Oct 1, 20242024-10 monthly summary for lowRISC/opentitan: Focused on stabilizing test infrastructure for mailbox-related tests. Key accomplishment: fixed a compile-time dependency in the Mailbox (mbx) unit tests by adding the missing <array> header to enable std::array usage in tests, resolving prior compile/run failures and restoring CI reliability. Commit involved: b59a3827910f8cfde528f04c6982a0effa1af20d. Overall impact: improved regression coverage and test stability with minimal risk to codebase. Demonstrated skills in C++ test harness maintenance, header management, and collaboration via focused, low-risk fixes.
October 2024
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Quality Metrics
Correctness91.8%
Maintainability91.8%
Architecture91.0%
Performance83.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyBUILDBashBazelBzlCC++DoxygenHCLHTML
Technical Skills
API DesignAssembly Language ProgrammingBackend DevelopmentBazelBazel RulesBindgenBit ManipulationBuild ScriptsBuild SystemBuild System ConfigurationBuild System DevelopmentBuild System IntegrationBuild System ManagementBuild SystemsBuild Systems (Bazel)
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